Don't include openssl/engine.h if it's not going to be used

(cherry picked from commit ed4ee5924b14e263d79bd682cdd0ce48758b12df)

diff --git a/pdns/libssl.cc b/pdns/libssl.cc
index f9e87aaa86168679b3abad7f34c8a01fbc13cbd6..f4af47ff63b84207c33cf3205eadc075f0f1f70a 100644 (file)
--- a/pdns/libssl.cc
+++ b/pdns/libssl.cc
@@ -12,9 +12,11 @@
 #include <pthread.h>
 
 #include <openssl/conf.h>
+#if OPENSSL_VERSION_MAJOR < 3 || !defined(HAVE_TLS_PROVIDERS)
 #ifndef OPENSSL_NO_ENGINE
 #include <openssl/engine.h>
 #endif
+#endif
 #include <openssl/err.h>
 #ifndef DISABLE_OCSP_STAPLING
 #include <openssl/ocsp.h>